package com.atguigu.eduservice.service.impl;

import com.atguigu.eduservice.client.VodClient;
import com.atguigu.eduservice.entity.EduVideo;
import com.atguigu.eduservice.mapper.EduVideoMapper;
import com.atguigu.eduservice.service.EduVideoService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.mysql.cj.util.StringUtils;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;

/**
 * <p>
 * 课程视频 服务实现类
 * </p>
 *
 * @author shaki
 * @since 2021-06-02
 */
@Service
public class EduVideoServiceImpl extends ServiceImpl<EduVideoMapper, EduVideo> implements EduVideoService {
    @Resource
    private VodClient vodClient;
    /**
     * TODO 删除小节时，应删除对应的视频
     * @param courseId
     */
    @Override
    public void removeVideoByCourseId(String courseId) {
        //根据课程id查询所有的视频id
        QueryWrapper<EduVideo> wrapperVideo = new QueryWrapper<>();
        wrapperVideo.eq("course_id",courseId);
        wrapperVideo.select("video_source_id");
        List<EduVideo> videoList = baseMapper.selectList(wrapperVideo);
        List<String> videoIds = new ArrayList<>();
        for (EduVideo eduVideo : videoList) {
            if(!StringUtils.isNullOrEmpty(eduVideo.getVideoSourceId())){
                videoIds.add(eduVideo.getVideoSourceId());
            }
        }
        if(videoIds.size() > 0){
            vodClient.deleteBatch(videoIds);
        }


        QueryWrapper<EduVideo> wrapper = new QueryWrapper<>();
        wrapper.eq("course_id",courseId);
        baseMapper.delete(wrapper);
    }
}
